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# The sequence P is defined by Pn = 10(Pn – 1) – 2 for each integer n >

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Math Expert
Joined: 02 Sep 2009
Posts: 52279
The sequence P is defined by Pn = 10(Pn – 1) – 2 for each integer n >  [#permalink]

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17 Dec 2018, 01:07
1
00:00

Difficulty:

25% (medium)

Question Stats:

82% (01:15) correct 18% (01:46) wrong based on 17 sessions

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The sequence P is defined by $$P_n = 10(P_{n - 1}) - 2$$ for each integer n ≥ 2. If $$P_1 = 2$$, what is the value of $$P_4$$?

A. 2
B. 18
C. 178
D. 1778
E. 1788

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Re: The sequence P is defined by Pn = 10(Pn – 1) – 2 for each integer n >  [#permalink]

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17 Dec 2018, 02:45
Bunuel wrote:
The sequence P is defined by $$P_n = 10(P_{n - 1}) - 2$$ for each integer n ≥ 2. If $$P_1 = 2$$, what is the value of $$P_4$$?

A. 2
B. 18
C. 178
D. 1778
E. 1788

p1= 2
p2= 18
p3=178
p4=1778
IMO D
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Re: The sequence P is defined by Pn = 10(Pn – 1) – 2 for each integer n > &nbs [#permalink] 17 Dec 2018, 02:45
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